Container closure



FIG. 1 is a top perspective view of a container closure in accordance with my new design;

FIG. 2 is a top plan view thereof; and,

FIG. 3 is a front elevational view thereof, a rear, left side and right side elevational view thereof being identical.

A bottom view has been omitted as it is devoid of surface ornamentation. 

The ornamental design for a container closure, as shown and described. 